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Reapex is a lightweight "framework" written in TypeScript to build pluggable and extendable redux(react) application

Reapex is designed in a way that modules have a clear boundary with each other, it forces people to think in a modularized way when working with Reapex.

Reapex supports plugins which make it easy to share reusable modules among projects. Or even publishing to npm. Such as reapex-plugin-dataloader

Built with the love of TypeScript

Reapex is written with TypeScript and it offers strongly typed state, selectors, actions.


  • [x] Reapex will automatically create actions/action types, much less boilerplate which makes app easy to maintain and refactor
  • [x] Reapex loads modules dynamically, sagas/reducers are registered dynamically which makes code-splitting easy
  • [x] Plugin support, create reusable and shareable code easily
  • [x] Lightweight, easy to integrate with existing react/redux/redux-sagas application


  1. Counter: A legendary Counter example
  2. Login Form: Side effects handling with the demo of API call

Getting started with a simple Counter example

npm i reapex --save

Install peer dependencies

npm i react react-dom redux react-redux redux-saga --save

1. Initialize the application

import { App } from 'reapex'

const app = new App()

2. Create a model(the shape of the state)

const counter = app.model('Counter', { total: 0 })

3. Defined the mutations: how you want the state to be mutated

Mutation combines action types and reducer, and it returns action creators

const [mutations] = counter.mutations({
  increase: (t: number) => s => s.set('total', + t),
  decrease: () => s => s.set('total', - 1),

The function: (t: number) => s => s.set('total', + t), t: number will be the input parameter of the action creator. s is a typed immutable Record<{total: number}>. By running the code above you will get an action creator map as:

  increase: (t: number) => ({ type: 'Counter/increase',  payload: [t] })
  decrease: () => ({ type: 'Counter/decrease' })

4. Connect it with Component

react-redux users should be very familiar with the following codes, it is a typical react-redux container, but with action creators and selectors which automatically created by reapex.

import React from 'react'
import { useSelector, useDispatch, Provider } from 'react-redux'

export const Counter = () => {
  const total = useSelector(
  const dispatch = useDispatch()
  return (
      <button onClick={() => dispatch(mutations.decrease())}>-</button>
      <button onClick={() => dispatch(mutations.increase(2))}>+2</button>

Note: counter.state.get('total') provides the selector to the total

5. Render it!

import React from 'react'
import { render } from 'react-dom'
import { Provider } from 'react-redux'

const store = app.createStore()

  <Provider store={store}>
    <Counter />

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